Gluteal Region And Thigh Flashcards
Gluteal region
. Post. To pelvis
. Boundaries: iliac crest sup., greater trochanter lat., and gluteal fold inf.
Thigh region boundaries
. Btw hip and knee
. Ant: inguinal ligament
. Post.: gluteal fold
Fascia lata attachments and function
.deep fascia of gluteal region and thigh
. Ant.: fuses w/ inguinal ligament and attaches to pubis
. Lat. and post.: iliac crest, ischial tuberosity, and sacrum
. Inf.: femur and tibia at knee
. Continuous w/ crural fascia
. Encloses gluteus Maximus and tensor fascia latae mm. To help stabilize knee
Saphenous opening
. Superomedial thigh lat. to pubic tubercle
. Transmits blood and lymphatic vessels
Iliotibial band
. Lat. thickening of fascia lata
. Attachments: iliac tubercle sup., lat. tibial (Gerry) tubercle inf.
Intermuscular septa
. Deep extensions attaching the fascia lata to femur
. Lat. intermuscular septum well defined and attached to iliotibial tract to linea aspera and lat. supracondylar line
. Med. and post. Intermuscular septa poorly defined, attach to med. linea aspera
Compartments of thigh
. Ant: flexors of hip and extensors of leg
. Med.: adductors of thigh
. Post.: extensors of thigh and flexors of leg
Tensor fasciae latae m. OIAN
O: Iliac crest and anterior superior iliac spine (ASIS)
I: Iliotibial tract and Gerdy tubercle
A: Flexes, abducts, medially rotates thigh; stabilizes extended knee
N: Superior gluteal n.
Gluteus Maximus OIAN
O: Post. ilium surface; dorsal sacrum, coccyx, and sacrotuberous lig.
I: Iliotibial tract and Gerdy tubercle; gluteal tuberosity of femur
A: Extends, laterally rotates thigh; stabilizes torso; assists standing from
seated position
N: Inferior gluteal n.
Gluteus medius OIAN
O: Anterosuperior ilium surface
I: Greater trochanter of femur
A: Abducts, medially rotates thigh; stabilizes pelvis in one-legged stance
N: Superior gluteal n.
Gluteus minimums OIAN
O: Anteroinferior ilium surface
I: Greater trochanter of femur
A: Abducts, medially rotates thigh; stabilizes pelvis in one-legged stance
N: Superior gluteal n.
Gluteus muscle use while walking
. Maximus counteracts forward momentum of torso
. Medius and minimus prevent pelvic tilt when contralateral leg is lifted
Piriformis m. OIAN
O: Ventral sacrum w/in pelvis and greater sciatic notch margin
I: Greater trochanter of femur (via greater sciatic foramen)
A: Laterally rotates thigh; abducts flexed thigh
N: Nerve to piriformis (S1-S2
Obturator internus m. OIAN
O: Pelvic surface of obturator membrane
I: Greater trochanter of femur (via lesser sciatic foramen)
A: Laterally rotates thigh; abducts flexed thigh
N: Nerve to obturator internus (L5-S1)
Superior gemellus m. OIAN
O: Ischial spine
I: Greater trochanter of femur via tendon of obturator internus
A: Laterally rotates thigh; abducts flexed thigh
N: Nerve to obturator internus (L5-S1)
Inferior gemellus OIAN
O: Ischial tuberosity
I: Greater trochanter of femur via tendon of
obturator internus
A: Laterally rotates thigh; abducts flexed thigh
N: Nerve to quadratus femoris (L5-S1)
Quadratus femoris m. OIAN
O: Ischial tuberosity
I: Quadrate tubercle of intertrochanteric crest
A: Laterally rotates thigh
N: Nerve to quadratus femoris (L5-S1)
Trochanteric bursa
. Separates gluteus Maximus from greater trochanter of femur
Ischial bursa
. Separates gluteus Maximus from ischial tuberosity
Trochanteric bursitis
. Pain over greater trochanter that radiates to IT tract when climbing stairs or rising from seated position
Ischial bursitis (Weaver’s bottom)
. . Caused be extended sitting on hard surfaces
. Coupled w/ repetitive lower limb movements
Gluteal region branches of sacral plexus
. Sup. And inf. Gluteal nn. . Sciatic n. . Post. Femoral cutaneous n. . Pudendal n. . Minor muscular nn.
Sup. Gluteal n.
. L4-S1
. Exits greater sciatic foramen sup. To piriformis
. Courses and ratifies in plane btw gluteus medius and minimus
Inf. Gluteal n.
. L5-S2
. Exits greater sciatic foramen inf. To piriformis
. Branches enter deep surface of Maximus
Sciatic n.
. L4-S3
. Exits greater sciatic foramen inf. To piriformis
. Courses inf. And deep to Maximus, sup. To obturator internus, gemellus, and quad femoris
. Lat. to ischial tuberosity
. Tibial division: from ant. Divisions of sacral plexus
. Common fibular division: from post. Divisions of sacral plexus
. Divides in popliteal fossa
Posterior femoral cutaneous n.
. S2-3
. Course similar to sciatic n.
. Emerges inf. To Maximus and descends in post. Thigh deep to fascia lata
. Supplies inf. Cluneal nn. To the skin of butt
Cutaneous innervation of gluteal region
. Cluneal branches of dorsal primary rami (L1-S3)
. Post. Femoral cutaneous n.
Superior gluteal a.
. Branch of post. Division of internal iliac a.
. Accompanies sup. Gluteal n.
. Supplies Maximus, medius, minimus, and tensor fasciae latae